ms sql row number over partition

1USE AdventureWorks2012;  
2GO  
3SELECT FirstName, LastName, TerritoryName, ROUND(SalesYTD,2,1) AS SalesYTD,  
4ROW_NUMBER() OVER(PARTITION BY TerritoryName ORDER BY SalesYTD DESC) 
5  AS Row  
6FROM Sales.vSalesPerson  
7WHERE TerritoryName IS NOT NULL AND SalesYTD <> 0  
8ORDER BY TerritoryName;  
9

1-- Uses AdventureWorks  
2  
3SELECT ROW_NUMBER() OVER(ORDER BY SUM(SalesAmountQuota) DESC) 
4    AS RowNumber,  
5    FirstName, LastName,   
6    CONVERT(varchar(13), SUM(SalesAmountQuota),1) AS SalesQuota   
7FROM dbo.DimEmployee AS e  
8INNER JOIN dbo.FactSalesQuota AS sq  
9    ON e.EmployeeKey = sq.EmployeeKey  
10WHERE e.SalesPersonFlag = 1  
11GROUP BY LastName, FirstName;  
12